Refactors page titles/descriptions into reusable PageHeader component in AIPage, AnalyticsPage, ChatPage, FinancesPage, FocusPage, SettingsPage, ThemePage, and VoicePage. Replit-Commit-Author: Agent Replit-Commit-Session-Id: d7e7c4e8-20cb-41c4-9d0e-79f48938fede Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/9777c70b-fc38-4831-8d6b-78dfffe041b0/259ea43b-b9fd-4bd0-b9f3-f4898fd6e25c.jpg
Introduces `PageHeader` component with a back-to-dashboard button and integrates it into AIPage, AnalyticsPage, FinancesPage, TasksPage, and VoicePage. Replit-Commit-Author: Agent Replit-Commit-Session-Id: d7e7c4e8-20cb-41c4-9d0e-79f48938fede
Adds Tasks, Finances, Voice, AI, Analytics, and Settings pages with routing in App.tsx. Replit-Commit-Author: Agent Replit-Commit-Session-Id: 10e60398-05df-4c0e-8698-578a1494e818 Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/81470e0d-8ae8-4335-9301-cd9a69e670fa/29a30ac5-78e2-49a4-b73b-7a3f9967ce79.jpg